Actuator Resilient Support Damping With Localized Cushioning
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Solution Overview
Problem
Existing actuators require a significant amount of cushioning material to attenuate vibrations, making it difficult to reduce the overall material usage.
Innovation Solution
An actuator design that includes a resilient support with a deformation portion where cushioning material is provided between the attachment member and the deformation portion, and is adhered to the deformation portion and attachment member, enhancing damping effects while reducing the amount of cushioning material used.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cushioning material is provided between the attachment member and the deformation portion, then vibration attenuation is achieved, but the amount of cushioning material increases
Solution Approach 1:
The cushioning material is strategically placed only at the deformation portion where bending occurs during actuator operation, rather than uniformly distributing it throughout the resilient support structure. This localized placement concentrates the damping effect where it is most needed while minimizing overall material usage.
Solution Approach 2:
The cushioning material is positioned in the thickness direction between the attachment member and the deformation portion, utilizing the vertical dimension to achieve vibration attenuation without increasing the horizontal footprint or overall volume of the actuator assembly.
2Reliability
If cushioning material is adhered to the deformation portion, then damping effect is enhanced, but manufacturing complexity increases
Solution Approach 1:
The resilient support is divided into distinct functional zones: the attachment member, the deformation portion, and the cushioning material layer. This segmentation allows each component to be optimized and manufactured separately, with the cushioning material applied as a distinct layer to the deformation portion.
Solution Approach 2:
The cushioning material is pre-formed and then adhered to the deformation portion in a separate manufacturing step, allowing for quality control and precise placement before final assembly. This preliminary preparation simplifies the overall manufacturing process by separating complex operations into manageable stages.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The actuator effectively attenuates vibrations with a reduced amount of cushioning material, maintaining damping effects and minimizing material degradation through strategic placement and adhesion of the cushioning material.
Implementation Method 1
a movable element having a magnet disposed facing the coil, the movable element being displaced relative to the coil by energization of the coil
Implementation Method 2
a deformation portion that links the attachment member-side fixing portion and the movable element-side fixing portion
Implementation Method 3
a cushioning material provided between the attachment member and the deformation portion, the cushioning material deforming in conjunction with bending deformation of the deformation portion
Data Source
AI summary
An actuator includes an attachment member including a coil; a movable element having a magnet disposed opposite to the coil, and that is displaced relative to the attachment member when the coil is energized; a resilient support; and a cushioning material. The resilient support has an attachment member-side fixing portion that is fixed to the attachment member, a movable element-side fixing portion that is fixed to the movable element, and a deformation portion that links the attachment member-side fixing portion and the movable element-side fixing portion. The cushioning material is provided between the attachment member and the deformation portion, and deforms in conjunction with bending deformation of the deformation portion.